I heard the LRS at AXPONA. Wendell played some tunes and I just couldn’t believe all that was coming out of them. If you have Tin Pan Alley - Stevie ray vaughn - do yourself a favor and put it on. 
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To OP; Same here. There’s nothing wrong with either your amp or your speakers. Don’t call the factory. I even bought a new Schiit Vidar amp(supposed to be a high-current amp) and if I turn the volume up enough to get good loud room-filling sound the amp goes into thermal overload and shuts down. Really a bummer. My theory is the LRS speaker draws a lot of current and requires really big watts rms per channel. I can’t afford a new Bryston amp with 600 wpc into 4 ohms so I’ll just have to make due with what I’ve got for now.
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I am now using the LRS speakers with a subwoofer set at 50 Hz. It sounds amazing but I can still go overboard with some pieces that I want to hear louder and the BHK250 shuts off. I cant afford a monster amp like you say but I am happy with this anyway. Thanks for your reply.
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I had LRS’s and was driving them with a SGCD and Emotiva XPA-100 monoblocks (440 wpc) and I would often get one of the amps to shut down at even medium volume. I think it’s Maggies power draw that does it. I returned the LRS’s and drive Wharfedale EVO 4.2’s at any volume I wish with no issues. Maggies just didn’t do it for me.
That said, I can’t imagine a BHK not being able to drive those…
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I solved the problem this morning. I went into the settings menus on the (AVR) preamp and located the adjustment for the output signal level and turned it up. success!!! Now I’m getting good loud volume and the amp isn’t overheating or shutting down anymore. The problem wasn’t the amp wimping out, the problem was the signal from the preamp was too small, or too low, whatever, so the amp was struggling to amplify it enough. Maybe the same fix can work for you guys. By the way what is a BHK?
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My preamp is also a PSAudio BHK and I dont believe there is a way to adjust the output signal level…
After months of having problems with my BHK250 driving the Magnepan LRS speakers I was convinced to send it in to you to get it checked. I got it back a couple of days ago. It is now MAGIC!!! I dont know what your people found but whatever it was they fixed it. They are now driving the Maggies without any problems, including the high dynamic pieces it was crashing on before. Thanks to you and your staff for correcting this problem.
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Thanks for providing an update. I had sort of eliminated the 250 from consideration for a new .7 system that I’d like to build, but there is now hope again😊
I am again in despair about my BHK250. I think it is just not enough for the little Magnepan LRS at high volumes. The same problem that occurred before again happened. In a point of a high dynamic of a musical piece, the BHK shut down. I was playing Bob Curnow’s L.A. Big Band, The Music of Pat Metheny and lyle Mays, THE FIRST CIRCLE. This piece starts at medium volume and gets louder as it progresses. At a point of a high spot is when the event occurred again. Guess I’ll give up. The BHK250 drives my Merlin VSM’s beautifully, a speaker with a higher sensitivity. I recently got a pair of the Stellar M1200’s and they are amazing with the Magnepans!! I guess that’s where they will stay connected to from here on in.
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This is very odd. I have a BHK250 driving Magnepan 3.7i with positive results. No problems playing loud dynamic music. Can the LRS be harder to drive than 3.7i???
They are supposed to be very hard to drive. I have a pair of the Magnepan MG12QR’s and the BHK has no problem with them. I never thought this would happen…
They are tremendously difficult to drive; exceeding inefficient, very low impedance, current hungry.
Is there a way to verify the speakers are in proper spec? Perhaps it is them that is the issue and not the BHK.
My LRS experience is stated above, but yeah, it’s hard to imagine a BHK250 unable to handle LRS’s. I wonder if LRS’s can dip below 2 ohms?
You should reconsider. I have the BHK250 driving the .7 with great result though it took a lot of trials and errors on the speaker placement - even a movement of an inch counts!
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It likely happens when the Maggies hit a low impedance dip and shut down the BHKs. The M1200s are, as you know, considerably more powerful.
The speakers run perfectly well with the Stellar M1200’s…
Nothing wrong with my speaker placement to cause this problem…
Yes, exactly. There are very few speakers the 250 cannot drive.